I am onboard/aboard the bus

[Torsten]

I remember asking a similar question quite a couple of years ago.

difference between 'welcome aboard' and 'welcome on board'?

Hi, Is there difference in meaning between ‘welcome aboard’ and ‘welcome on board’? Mrs Google say that both phrases are quite popular so when do you use which? Many thanks, Torsten TOEFL listening lectures: What is the main difference between a fad and a trend?